Effective from
- Added
Contact with and (suspected) exposure to high-level blast overpressure
Billable diagnosis code
CDC/NCHS · FY2027Coverage depends on the payer, service and applicable policy. A billable code does not guarantee payment.
For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.
Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.
Official coding guidelines → · CMS ↗First observed · 2026-10-01
Latest recorded change · FY2027
Effective from
Contact with and (suspected) exposure to high-level blast overpressure
Billable diagnosis code
CDC/NCHS · FY2027| All editions | Effective from | Code history |
|---|---|---|
| FY2027 | 2026-10-01 | Added |
Contact with and (suspected) exposure to HLB overpressure
contact with and (suspected) exposures to potential hazards to health
Historical assignments from the CDC conversion table support data retrieval. They do not authorize substituting a previous code for the current code.
Previous assignment: Z77.9
Other entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| Z77.40 | Contact with and (suspected) exposure to unspecified blast overpressure | Billable / specific |
| Z77.41 | Contact with and (suspected) exposure to low-level blast overpressure | Billable / specific |
| Z77.49 | Contact with and (suspected) exposure to other blast overpressure | Billable / specific |
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